40
If something divides 80 with remainder 2, that means that it would have divided 78 evenly. Note however that the answer cannot be 2 as that would leave no remainder. The other factors of 78 are 3, 6, 13, 26 and 39. Any of these will work as the answer.
40
8.8889
80 divided by 12 equals 6 with a remainder of 8.
640 divided by 8 is 80 with remainder 0.
80 divided by four equals 20.
40
162 divided by 2
8.8889
700 divided by 80 equals 8 with a remainder of 60.
80 divided by 12 equals 6 with a remainder of 8.
80 divided by 12 equals 6 with a remainder of 8.
0.0125
6.6667
26.6667
80 divided by 9 is 8 with remainder 8.
80.6667
80 divided by 7 is 11 with remainder 3.